libcamera: ipa_module: add path getter

Add a method to IPAModule to get the path of the IPA module shared
object that the IPAModule was constructed from.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/libcamera/include/ipa_module.h

@@ -26,6 +26,7 @@ public:
 	bool isValid() const;
 
 	const struct IPAModuleInfo &info() const;
+	const std::string &path() const;
 
 	bool load();
 

src/libcamera/ipa_module.cpp

@@ -321,6 +321,19 @@ const struct IPAModuleInfo &IPAModule::info() const
 	return info_;
 }
 
+/**
+ * \brief Retrieve the IPA module path
+ *
+ * The IPA module path is the file name and path of the IPA module shared
+ * object from which the IPA module was created.
+ *
+ * \return The IPA module path
+ */
+const std::string &IPAModule::path() const
+{
+	return libPath_;
+}
+
 /**
  * \brief Load the IPA implementation factory from the shared object
  *